Concise hierarchy

(Kingdom) Animalia - (Phylum) Arthropoda

Current position

Xenocarida ([unranked])

Ref: E.J. van Nieukerken, 2010: 177.

Alternative positions

Crustacea (Subphylum) Brünnich, 1772	Ref: E.E. Ruppert et al., 2004: fig. 19.90.
Crustacea (Superclass) Pennant, 1777	Ref: [Anonymous], 2007: 4 Oct 2007.
Crustacea ([unranked]) Brünnich, 1772	Ref: J.J. Sepkoski Jr., 2002: 196.
Eucrustacea (Epiclass) Kingsley, 1894	Ref: D. Grimaldi & M.S. Engel, 2005: table 3.2.

Historical positions

Xenocarida ([unranked])	Ref: E.J. van Nieukerken, 2010: 177, 178.
Eucrustacea (Epiclass) Kingsley, 1894	Ref: D. Grimaldi & M.S. Engel, 2005: table 3.2.
Crustacea (Subphylum) Brünnich, 1772	Ref: E.E. Ruppert et al., 2004: 615-616, fig. 19.90.
Crustacea ([unranked]) Brünnich, 1772	Ref: J.J. Sepkoski Jr., 2002: 196.
Crustacea (Subphylum) Brünnich, 1772	Ref: J.W. Martin & G.E. Davis, 2001: 19-20, 58.
Crustacea (Phylum) (Brünnich, 1772)	Ref: G. Boxshall, 2001: 243.
Crustacea (Subphylum) Brünnich, 1772	Ref: C. Nielsen, 1995 [inferred name] [indirect]
Crustacea (Subphylum) Brünnich, 1772	Ref: 1995
Crustacea (Subphylum) Brünnich, 1772	Ref: R.C. Brusca & G.J. Brusca, 1990

Number of Subtaxa

2024	Available in Systema Naturae 2000	1o;3f;8g;5s; †1o;1f;2g;2s
1989-present	Systema Naturae 2000	[1o;3f;8g; †1o]
2009-present	World Register of Marine Species (WoRMS): 8 Feb 2012	[1o;3f;8g]
2002	J.J. Sepkoski Jr.: 196	[; †1o;2g]
2001	J.W. Martin & G.E. Davis	[1o;2f]
2001	G. Boxshall: 243	12s
1990	R.C. Brusca & G.J. Brusca	1o; †1o